Question

# The curved surface area of a cylinder is $$2200$$ sq. cm and circumference of its base is $$220$$ cm. Then the height of the cylinder is :

A
22
B
10
C
25
D
2.2

Solution

## The correct option is C $$10$$Let the radius of the base be $$'r'$$ cm & height be $$'h'$$ cm.Now, curved surface area of cylinder $$=2\pi rh$$Also, circumference of base, $$C=2\pi r=220cm$$$$\therefore$$  Curved surface area of cylinder $$=220\times h$$$$\Rightarrow 2200=220\times h$$$$\Rightarrow h=\dfrac { 2200 }{ 220 } =10cm$$Mathematics

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